Malicious PDF — malware analysis report

Static analysis result for SHA-256 30d5f50c98199a31…

MALICIOUS

PDF

32.5 KB Created: 2020-03-27 01:34:53 +03:00 Authoring application: Adobe InDesign CS2 (4.0) (via Adobe PDF Library 7.0)
MD5: 08d7d6dd6a7959c1001513a281953005 SHA-1: caf7406e68b71315fc0865be27cc11b7ecb081a0 SHA-256: 30d5f50c98199a319e1c97207f39ac15521fbf2bb9d393f23df904e8e1e11104
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded links to external PDF files, primarily hosted on www.gorillawalker.com. This behavior is indicative of a link farm or SEO manipulation tactic, which can be used to distribute malicious content or improve search engine ranking for malicious sites. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8529

Heuristics 2

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://www.gorillawalker.com/six-fairy-tales-from-the-brothers-grimm-with-original-etchings.pdf
    • http://www.gorillawalker.com/acute-ischemic-stroke-pipeline-review-h2-2011-download-pdf-digital.pdf
    • http://www.gorillawalker.com/the-pleasure-is-all-mine-selfish-food-for-modern-life.pdf
    • http://www.gorillawalker.com/the-rise-of-false-messiahs-carpathia-s-evil-tricks-left.pdf
    • http://www.gorillawalker.com/daddy-s-girl-daughter-s-payback-kindle-edition.pdf
    • http://www.gorillawalker.com/evan-meets-bucky-lee.pdf
    • http://www.gorillawalker.com/heartcrystal-heartfast-volume-2.pdf
    • http://www.gorillawalker.com/travels-in-laos-and-among-the-tribes-of-southwest-indochina.pdf
    • http://www.gorillawalker.com/last-words-a-memoir.pdf
    • http://www.gorillawalker.com/chemistry-problems-fifth-edition.pdf
    • http://www.gorillawalker.com/hearing-in-children.pdf
    • http://www.gorillawalker.com/the-end-of-the-palestine-mandate.pdf
    • http://www.gorillawalker.com/the-best-ever-guide-to-demotivation-for-cubs-fans-how.pdf
    • http://www.gorillawalker.com/transitions-a-woman-s-guide-to-successful-retirement.pdf
    • http://www.gorillawalker.com/the-magical-tooth-fairies-the-secret-of-the-magic-dust.pdf
    • http://www.gorillawalker.com/robert-holmes-a-life-in-words-kindle-edition.pdf
    • http://www.gorillawalker.com/delicious-christmas-treats-includes-25-recipes.pdf
    • http://www.gorillawalker.com/food-for-life-friendly-food-the-essential-guide-to-avoiding.pdf
    • http://www.gorillawalker.com/why-left-behind-should-be-left-behind.pdf
    • http://www.gorillawalker.com/when-it-s-purim-very-first-board-books.pdf
    • http://www.gorillawalker.com/raccoon-city-safari.pdf
    • http://www.gorillawalker.com/health-and-wellness-for-life-with-online-study-guide-health.pdf
    • http://www.gorillawalker.com/on-the-concept-of-history.pdf
    • http://www.gorillawalker.com/the-battle-of-st-bart-s.pdf
    • http://www.gorillawalker.com/diagnosis-of-diseases-of-the-chest-v-1.pdf
    • http://www.gorillawalker.com/linda-goodman-s-sun-signs.pdf
    • http://www.gorillawalker.com/securing-cyber-physical-systems.pdf
    • http://www.gorillawalker.com/penny-serenade-sheet-music.pdf
    • http://www.gorillawalker.com/the-family-in-renaissance-florence-book-three-i-libri-della.pdf
    • http://www.gorillawalker.com/the-knight-ridder-crb-commodity-yearbook-1993.pdf
    • http://www.gorillawalker.com/cinema-and-intermediality-the-passion-for-the-in-between.pdf
    • http://www.gorillawalker.com/the-road-to-chess-mastery.pdf
    • http://www.gorillawalker.com/numerical-methods-in-sensitivity-analysis-and-shape-optimization.pdf
    • http://www.gorillawalker.com/the-great-game-the-bookman-histories-book-3.pdf
    • http://www.gorillawalker.com/sweet-as-cane-salty-as-tears.pdf
    • http://www.gorillawalker.com/biochemistry-of-signal-transduction-and-regulation.pdf
    • http://www.gorillawalker.com/queen-of-the-south.pdf
    • http://www.gorillawalker.com/cognitive-linguistics-and-second-language-learning-theoretical-basics-and-experimental.pdf
    • http://www.gorillawalker.com/fundamentals-of-statistics-3rd-edition-sullivan-statistics-series.pdf
    • http://www.gorillawalker.com/unattended-radiation-sensor-systems-for-remote-applications-washington-dc-15.pdf
    • http://www.gorillawalker.com/the-best-ever-gui
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://www.aiim.org/pdfa/ns/extension/
    • http://www.aiim.org/pdfa/ns/schema#
    • http://www.aiim.org/pdfa/ns/property#
    • http://www.aiim.org/pdfa/ns/id/

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